Cutting device



Nov. 8, 1932. s. n. SVENDSGAARD 1,887,440

CUTTING DEVICE Filed Feb. 5, 1932 40 J INVENTOR WITNESS A 6.18; Grends aard, BY

ATTORNEY Mmi.

I FatentedNov. 8, I 1 i Y SVEfiitfiIt. svENnsGAARn, onmnsnrmnb, unseen CUTTING DEVICE 7 Application filed February 5, 1932.- Serial no; 591,149;

This inventionrelates to a cutting device- Figure 3 is a transverse vertical section and is more particularly designed for use as taken along'the line 33: ofFigure 1;, and

a shears for cutting grass where the usual Figure 4 is'a vertical section taken alongthe" lawn mower cannot be applied. i line 4+4 ofFigure c 1 An object of theinve'ntion is the provision Referring more particularly to the draw:

of a cutting device having a basemember and ing, designates-1a base member fOTmQd of a projecting fixed bladewith a'pair of movmetalwhich has an angular extension 11 proable blades having a-common pivotal mountvided withv ears 12 adapted to embrace the ing on the base member with the blades'movlower end of a hollow'handle 13. "Ears are able toward or awayfroin the cutting edge secured at let to the-handle in any approved, C of the fixed blade so that a double cutting mannerp. f f l q action will be. had, 7 1 A fixed blade 15*is formed integrally with Another object of the invention is the prothe base member 10 and-is triangularlyvision of a pair of grass shears having a'pair shaped with a smaller end or apex 16. formof movable blades operatively associated with ing the outer terminus a d l d a fixed blade with means for oscillating the 15. The sides 17 of the blade 15 areprovlded movable blades, said means including a re-' Wi h kni edges Whichco-operate with com leasable means whereby one of the blades p nta y o m d knlfe edges 1810f movonlymaybe operated so that power exerted able l s 19 and 20- .1 r 1 20 for operatin'g'both blades may be applied to At the inner. ends of the movable blades 1:

the single bladewhen it is desired to do heavm g 21 flIldQZ resp vely h ier work. 7 i j blades '19.and 20anda' pin 23 provides a A further object of the invention is the piv for he lugs and likewise themovable provision of s an of grass shears having blades' This pin is carried by the base mem- 25 movable blades operating in connection With berlO. 'Thls'constructlon .of the integrally the fixed blade with a crank shaft rockably formed lugs and the movableblades 1 a d mounted on a base member whichsupports 20 provide substantially bell-crankmembersl the movable blades, a handle being connected which may be oscillated towards or away.

with the. base member and having a passage from thek-nife edges 17 of the fixed blade 15 to receive a reciprocating rod which is adapt v A crank shaft 25 is mounted in bearings 26' so ed'to be actuated for rocking thexcrank shaft, which are secured to the base member 10.

for causing. an oscillation ofth'e movable This shaft-is provided with similarly dis-J blades. l i posedcranks27 a'nd28 and an intermediate -This invention will be best understood from crank 29; r I i I a 9rsi a i' p of he following t e A link 30"pivotall-yconnects thefcrank 2s s p m 1n vlew fifths mr y pg drawwith the blade 19" as shown at e1:- Aalink 32' 'P of the speclficatlon; has a pivotal connection 33 with the blade'QO .ertheless,'it is to be understood that the 1nnd i i t H- ect d' t 34i' ith the 40 vention is not confined to the disclosure, being r nk 2'7 f Th i t fi o' 91s i susceptible of such changes and modifications 'th f m' f abglt and imit for 61 151 dfir which shall define no material departure from heating the 11 512 32 with'the blade 20 t that. l the salient features of the invention as exwhen d sired thi jli nk 'b di f 'dY pressed in the pp claims from the blade 20 and'permit the blade-19to In the drawing: be operatedsolely by the rocking of'the crank Figure 1 is a plan view of a grass shears shaft 25. v 1 constructed in accordance with the principles An operating rod 35 is: mounted longitudi of my invention, nally of the hollow handle 13 and-is provided Figure 2 is a longitudinal side view of the with an eye 36 connectedwith the crank29l same, Thisrod extendslbeyond thehandle 13'and is provided with a hand-grip 37 whereby the rod may be reciprocated.

It will be noted in Fig. 4 that the outer end of the rod is threaded, as shown at 38, and is provided with a nut 39 at its outer end engaging the outer end of the hand-grip 37. The inner portion of the hand-grip is provided with a recess 40 adapted to receive a nut 41 threaded on the outer end of the rod 45. These nuts secure the hand-grip member in position on the rod'35. 1

A coil spring 42 is connected at 43 witha hande 13. The other end of the spring, 'as

shown at 44, is connected to the crank memher 29. V a

The operation of my device is as follows: When the rod 35 is reciprocatedthrough the hand-grip member 37, the crank shaft will be rocked so that the links and 32 will be reciprocated, therebycausing oscillation of the movable blades 19 and 20 on their common pivot 23. This'will move the cutting edges of the blades 19 and .20 into operative relation with the cutting edges 17 of the fixed blade 15.- The spring 36 will at all times tend to rock the crank shaft 25 and thus move the cutting blades 19 and 20 into an open or an inoperative position with respect to the fixed blade 15. r V v If it be desired at any time to employ the blade 19 for cutting purposes, it will only be'necessary to release the pivot pin 33 from the blade 20 so that the force applied to the reciprocating rod 35 maybe expended upon the operation of the single blade. It will be seen that the double shears may be operated as a single cutting device oras a double op erating mechanism. L r

In order to retain the-blade 20 stationary when bolt 33 is removedfrom its normalposition the boltis inserted in the opening of the blade 20 and theopening 51 in the base member 10. 'When this is done themovable blade 20 will be in close association with the fixed blade 15. a .Iolaim: we

1. A cutting device comprising a base member havinga stationary blade projecting therefrom, the opposite sides of the blade being provided with a knife edge, a pair of movable blades located upon the opposite sides of the stationary blade and having inwardly projecting lugs, a common pivot for the lugs carried by the stationary blade, means j for oscillating the movable blades into operative relation withthe knife edge of the stationary blade, and a springfor returning the movable bladesto an inoperative position.

2. A cutting device comprising a base member having a stationary blade projecting therefrom, .the opposite sides of the blade being provided with a 'knife edge, a pair of movable blades located upon the opposite s ides of the stationary bladeand having inwardly projecting lugs, a commonpivot for the lugs carried by the stationary blade, a crank shaft rotatably mounted on the base member and provided with a plurality of cranks, a link connecting a movable blade with a crank, an operating rod connected with a crank so that the cranf shaft may be manually. rocked, and a spring for returning the movable blades-to an inoperative position.

v 3. A cutting device comprising a base member having a stationary. blade projecting therefrom, the opposite sides of the blade being provided with a knife edge, a pair of movable blades located upon the opposite sides of the stationary blade and having in wardly projecting lugs, a common pivot for the lugs carried by the stationary blade, a crank shaft rotatably mounted on the base. member and provided with a plurality ofcranks, a link connecting a 'movable blade. with a crank, an operating rod connected with a crank so that the crank shaft maybe manually rocked, and a spring for'returning the movable blades to an inoperative position, one of said links being removably connected; to its respective blade so that said blade may be released when it is desired to employ but a single blade.

4. A cutting device comprising a base mem her having a stationary blade projecting therefrom, the opposite sides ofthe blade be- 9 ing provided with a knife edge, a pair of movable blades located upon the opposite sides of the stationary blade andhaving inwardly projecting lugs, a common pivot for the lugs carried by the stationary blade, 100 means for oscillating both of the blades simul-- taneously, said last-mentioned means includ{ ing releasable meansfor one of the movable blades so that the otherblade. may be operated soeyr a j 5. cutting device comprising a base mom ber having a stationary blade, a pair of movable blades pivotally mounted. on the base member and adapted to be moved into open-V ative relation with the stationary blade, a 110 hollowhandle connected with the base member, an operating rod mounted forreciproca tion in the hollow handle, rockablemeans on: the base member having pivotal connection with the operating rod, and means connecting 1' it the rockable means with the movable blades. 1

SVERRE R. SVENDSGAARD. 

